Twyer-cooler



Patented Oct. 25, !898. M. KILLEEN.

TWYER CUOLER.

(Application filed Oct. 14, 18974;

(No Model.)

INVENTOR WITNESSES w: NORRIS 'Evans cu. puo'roumu. WASNXNGTON. o. c'

Patented Oct. 25, l898.

No. &13,042.

M. KILLEEN. TWYER COOLER.

(Application filed Oct..14, 1897.)

2 Sheets-Sheet 2.

(No Model.)

INVENTOR WITNESSES UNITED STATES PATENT OFFICE.

MICHAEL KILLEEN, OF BRADDOCK, PENNSYLVANIA.

TWYER-COOLER.

SPECIFICATION forming part of Letters Patent No. 613,042, dated October25, 1898.

Application filed October 14, 1897. Serial No. 655 ,177. (No model.)

To all whom 't may concern:

Be it known that I, MICHAEL KILLEEN, of Braddock, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Twyer-Ooolers, of which the following is a full, clear,and exact description', reference being had to the accompanyingdrawings, forming part of this specification, in which- Figure 1 showsin vertical section a twyercooler, twyer, and a blast-pipe of ablast-furnace, the twyer-cooler being provided with my improvedprotecting-shield. Fig. 2 is an elevation of the twyer-cooler andshield, and Fig. 3 is a vertical section on the line III III of Fig. 2.

Twyer-coo1ers for blast-furnaces are tapering annular castings the wallsof which are made hollow for the circulation of water and which areadapted to be set in the walls of the blast-furnace, so as to formsockets or holders for the twyers and to protect the walls around thesame.

` In the drawings, A represents a twyercooler; B, the twyer, which fitsin the nose or small end thereof and projects into the furnace, and C isthe blast-pipe, which fits into the butt of the twyer and connects thesame with blast-main D.

As the nose of the twyer B projects a considerable distance into the'urnace it frequently happens when the material in the furnace slipsafter sticking to the side wall that molten iron and cinder will flowback through the twyer into the blast-pipe. As this is a plain pipe andis not water-cooled the contact of such molten material will rapidlyburn a hole through it, and the molten stuff escaping through such ahole will strike the side of the cooler and burn it, allowing the waterto'leak out. This not only causes the loss of the cooler, which is veryconsiderable in itself, but it may require the operation of the furnaceto be stopped for several hours to replace it. however, that the blastcannot be taken from the furnace as soon as the cooler is burned,because' there may be cinder at the openings of the other twyers, whichwould flow into them if the blast-pressure were removed; but the longerthe blast is kept on the more damage is done by the break at the firsttwyer and it becomes harder to remove. In order to avoid these Veryserious difficulties, which have been encountered in blast-furnacepractice heretofore, I have devised a protector or shield E, which Iplace in the large cooler against its inner surface, so that it willreach to the butt of the twyer. When such a shield is present and whenany breakout occurs, the molten iron or cinder runs down the shield andis shed by it away from the furnace without harming the cooler. I makethis shield of any refractory material, such as asbestos, shaped to fitthe inner surface of the cooler, or I may make it of fire-brick in onepiece or in sections. I may form studs or ribs F on such shields, sothat it can be grouted after being put in place, or I may make theshield out of iron, which is more resisting than cop per. I may alsocast studs on the inner surface of the cooler and plaster the insidewith a coating of fire-clay, using the studs to retain it; but I preferto use a shield previously formed to the required shape, since' suchshield can be readily placed in the cooler and is more convenient.

I claim- In a water-cooled twyer cooler or breast, the combinationtherewith of a removable protecting-shield of refractory material placedaround its inner surface.

In testimony whereof I have hereunto set my hand.

MICHAEL KILLEEN. Witnesses:

THOMAS W. BAKEWELL, G. I. HOLDSHIP.

It frequently happens,

